256-row multislice CT angiography in the postoperative evaluation of cerebral aneurysms treated with titanium clips: using three-dimensional rotational angiography as the standard of reference

Abstract

Objective

To assess the diagnostic accuracy of 256-row multislice computed tomographic angiography (CTA) compared with three-dimensional rotational angiography (3DRA) in the postoperative evaluation of cerebral aneurysms treated with titanium clips.

Methods

A total of 128 patients (42 men, 86 women; mean age, 57.6 years) with 143 cerebral aneurysms treated using titanium clips underwent both CTA and 3DRA. Two reviewers retrospectively evaluated the following parameters on CTA and 3DRA: (1) residual/recurrent aneurysm (absent or present), (2) patency of parent artery (patent or occluded/severe stenotic (> 70%)), and (3) patency of adjacent branch (patent or occluded/absent).

Results

A total of 24 residual/recurrent aneurysms were detected by 3DRA. The sensitivity, specificity, and accuracy of CTA for the detection of residual/recurrent aneurysms were 83.3%, 100%, and 97.2% for reviewer 1 and 79.2%, 100%, and 96.5% for reviewer 2, respectively. The sensitivity, specificity, and accuracy of CTA for the evaluation of patency of parent artery were 100%, 100%, and 100%, respectively, for both reviewers. The sensitivity, specificity, and accuracy of CTA for evaluation of the patency of adjacent branch were 85.1%, 100%, and 92.3% for reviewer 1 and 82.4%, 100%, and 90.9% for reviewer 2, respectively.

Conclusion

A 256-row multislice CTA is a valuable non-invasive tool for assessment of cerebral aneurysms treated with titanium clips.

Key Points

• A 256-row multislice CTA is an accurate imaging technique for the postoperative assessment of cerebral aneurysms treated with titanium clips.

• Sensitivity of CTA for the detection of residual/recurrent aneurysms was 79–83% compared with 3DRA.

• CTA is still limited in detecting residual/recurrent aneurysms of < 2 mm and small adjacent branches.

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Abbreviations

3DRA:

Three-dimensional rotational angiography

CTA:

Computed tomographic angiography

DSA:

Digital subtraction angiography

SAH:

Subarachnoid hemorrhage

VR:

Volume rendering

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Correspondence to Dae Young Yoon.

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The scientific guarantor of this publication is Dae Young Yoon.

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• Retrospective

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Kim, H.J., Yoon, D.Y., Kim, E.S. et al. 256-row multislice CT angiography in the postoperative evaluation of cerebral aneurysms treated with titanium clips: using three-dimensional rotational angiography as the standard of reference. Eur Radiol 30, 2152–2160 (2020). https://doi.org/10.1007/s00330-019-06560-7

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Keywords

  • Cerebral aneurysm
  • Aneurysm clipping
  • Residual or recurrent aneurysm
  • Computed tomographic angiography
  • Three-dimensional rotational angiography